Multiple exhaust gaskets?

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  • JTGS850GL
    Forum Guru
    Past Site Supporter
    • Aug 2013
    • 9735
    • GA

    #1

    Multiple exhaust gaskets?

    Doing some cleanup on my newly acquired GS1100G engine and found that all the exhaust ports had multiple exhaust gaskets. One had as many as 4. Is it normal to install more then one gasket per hole?
    http://img633.imageshack.us/img633/811/douMvs.jpg
    1980 GS1000GT (Daily rider with a 1983 1100G engine)
    1998 Honda ST1100 (Daily long distance rider)
    1982 GS850GLZ (Daily rider when the weather is crap)

    Darn, with so many daily riders it's hard to decide which one to jump on next.;)

    JTGS850GL aka Julius

    GS Resource Greetings
  • Steve
    GS Whisperer
    • Jun 2005
    • 35927
    • southwest oHIo

    #2
    Normal? No. Common? Yes.

    When a gasket is old and compressed into place, it just looks like a machined step in the exhaust port.
    Many rookie "mechanics" mistake it for such and install another gasket, thinking that there is none in place.

    .
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    hers: 1982 GS850GL - "Angel" and 1969 Suzuki T250 Scrambler
    #1 son: 1986 Yamaha Venture Royale 1300 and 1982 GS650GL "Rat Bagger"
    #2 son: 1980 GS1000G
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    Comment

    • Guest

      #3
      It's pretty common to see two in each port if you're using a 4 into 1, it's the only way to prevent a leak.

      Comment

      • Grimly
        Forum Guru
        Past Site Supporter
        Super Site Supporter
        • Sep 2012
        • 5802
        • Ireland

        #4
        Yep, some aftermarket exhaust makers just weren't very careful about jigging their pipes right, leading to misalignments and leaks, leading to hair-tearing episodes and desperation measures such as using more than one gasket and/or exhaust putty.
        It was a jungle, I tells ya.
        Dave
        '79 GS850GN '80 GS850GT
        Only a dog knows why a motorcyclist sticks his head out of a car window

        Comment

        • Mr.humbucker
          Forum Mentor
          Past Site Supporter
          • Nov 2012
          • 296
          • British Columbia

          #5
          How difficult is it or was it to remove the gaskets if you in fact did or had to? I have just installed my pipes (NOS) on a resoration project 81 GS550 and found that the pipe collar doesn't want to go all the way in with the new gaskets in place. I suspect that they are sitting on top of an old layer(s) of gasket. Anyone out there have any experience in removing older exhaust gaskets .... Or, is it necessary? Will the old gaskets that are still in there do the trick?
          Last edited by Mr.humbucker; 10-18-2015, 12:13 PM.
          GS550T 1981
          GS850G 1983
          GS650G 1982
          GS650G 1982 Under Restoration 😳🏍👍

          Comment

          • Katarat

            #6
            I use a cheap Harbor Freight 90 degree orange handled pick to remove mine

            Comment

            • Mr.humbucker
              Forum Mentor
              Past Site Supporter
              • Nov 2012
              • 296
              • British Columbia

              #7
              Yup, got one of those and will try it on my two 550T's as they both have stacked gaskets in there. After I updated my post earlier today I went out a had a go at the gaskets in a buggered head with stipped pipe bolt holes. I used a long handled slot screw driver and managed to get them all out much easier then I expected. The trick is a good edge on the tip of the srew driver. Will go at the the two waiting in the garage tomorrow. Thanks for the input.
              GS550T 1981
              GS850G 1983
              GS650G 1982
              GS650G 1982 Under Restoration 😳🏍👍

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